
Concept explainers
(a)
Interpretation:
The transferred heat has to be calculated.
Concept Introduction:
Specific heat can be defined as quantity of heat required to raise the temperature of
Where
C is the Specific heat
(a)

Answer to Problem 67QRT
The heat transferred value is
Explanation of Solution
Mixing of two given solutions with change in temperature, the heat transferred is determined as follows,
The solution mass obtained by adding the two volumes is calculated as follows,
The heat transferred is calculated as shown below,
(b)
Interpretation:
The thermochemical expression has to be identified.
Concept Introduction:
The balanced chemical equation that also defines the enthalpy change is called thermochemical equation.
(b)

Answer to Problem 67QRT
The thermochemical expression is
Explanation of Solution
Addition of given acid and base will result in neutralization reaction as follows,
The acid moles and base moles consumed are determined by considering molarity and volume of the solution.
The reaction is carried under constant pressure conditions hence,
Hence, the thermochemical expression is obtained as follows,
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Chapter 4 Solutions
Chemistry: The Molecular Science
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